baber/WOPTO huggingface dataset:
Patent GB-1171316-A (GB)
Title: Improvements in or relating to a method of and apparatus for Recording Signals on a Magnetic Medium
Inventor: FREEMAN JOHN ANDREW EASTCOURT
IPC: G11B20/08
Filed: 1966-05-12
Abstract: 1,171,316. Magnetic recording and playback methods. MARCONI CO. Ltd. 30 March, 1967 [12 May, 1966], No. 21208/66. Heading G5R. Signals to be recorded on a magnetic tape 5 are fed through terminals 1 via a pre-amplifier circuit 2 to a pulse width modulation circuit 3 as modulation input. The output of this circuit is fed to a magnetic record head 4 through resistors R1, R2. Magnetic tape 5 moves relative to the head 4. The pulse repetition frequency of circuit 3 is high relatively to the highest frequency in the signal to be recorded and in operation this high frequency constant effects the magnetic biasing of tape 5. Tape 5 records the mean value of the pulse width modulated signal. Signal reproducing apparatus, Fig. 1b, may be combined in a single unit with the recording apparatus of Fig. 1a, the pulse width modulation circuit and the preamplifier circuit being used both for recording and reproducing. When used for the reproduction of signals from tape 5, the output of the pulse width modulation circuit is fed to a detector circuit which may be an integration circuit or a low-pass filter arranged to have a sufficiently high upper limit frequency to pass the highest frequency of the recorded signal but to reject the pulse repetition frequency content of the pulse width modulation circuit output.
Patent GB-641444-A (GB)
Title: Thread linings for railway sleeper screws
Inventor: NERINCX CHRISTIAN MARIE GATON
IPC: F16B37/12
Filed: 1947-08-05
Abstract: 641,444. Bolt-hole bushes. KENITRA CO., Ltd. Aug. 5, 1947, No. 21313. [Class 89(i)] [Also in Group XXII] Internal thread linings for railway sleepers of the general form described in Specification 609,485 have the crests 17 of the threads lying in a surface that is slightly conical or trumpet-shaped. Instead of being inserted by a special tool as in Specification 621,984, the lining is inserted by the coach screw itself that is screwed about halfway into the lining prior to insertion into the sleeper. The lining may have a flared mouth to prevent it from going too far into the sleeper, and may have a restriction at its lower end to prevent the coach screw passing too far through. The lining is produced by winding strip on a mandrel having the taper
Patent GB-460377-A (GB)
Title: Improvements in and relating to induction systems of internal combustion engines
IPC: F02D9/10
Filed: 1935-07-26
Abstract: 460,377. Regulating ; cylinder inlet pipes. SWINNEY, T. J. July 26, 1935, No. 21327. [Classes 7 (ii), 7 (iii), and 7 (vi)] An induction system comprises two concentric passages for the supply of working fluid to the engine, the flow in such passages being controlled by valves rotating about a common axis. In Diesel engines, one passage may supply hot air and the other cold air, while in carburetter engines one may supply air and the other mixture. The Figure shows the two passages 7, 8 arranged coaxially, with throttle valves 12, 13 mounted on a common axis. The valve 12 is annular and works over a spherical enlargement 11 on the inner passage. The two valves may be connected to a common control through links provided with turn-buckles for adjusting the relative positions of the valves ; these may be such that the inner passage is slightly open when the outer one is closed. The outer passage, at the part surrounding the enlargement 11, may be shaped to give a Venturi action. Instead of butterfly valves, spherical or cylindrical valves with through-passages may be used. The outer passage may be provided with webs, which may be of helical formation to cause a turbulent flow.
Patent GB-672988-A (GB)
Title: Improvements in or relating to bone conduction hearing aids
IPC: H04R11/00
Filed: 1949-08-16
Abstract: 672,988. Instruments for deaf persons. FORTIPHONE, Ltd., and WOLFF, J. June 29, 1950 [Aug. 16, 1949], No. 21331/49. Drawings to Specification. Class 40 (iv). A bone conduction telephone receiver has a vibratory armature resiliently supported so as to be spaced from the remainder of the magnetic system by an air gap, characterized by three adjusting devices so arranged as to adjust said air gap at three points spaced around it. The description is identical with that of Specification 671,957.
Patent GB-516504-A (GB)
Title: Improvements in radio receivers
IPC: H03G3/26
Filed: 1938-07-19
Abstract: 516,504. Wireless receiving circuits. BROWN, N. H. B. Julv 19, 1938, No. 21393. [Class 40 (v)] Muting of a receiver during tuning is effected by switching in degenerative feed-back. means connected between the output and input of one of the amplifier stages, preferably the final or audo-frequency stage, of the receiver. As shown, the switch 14 is closed whenever the spindle of the main tuning condenser is in motion. The switch connects the degenerative feed-back path 16, 15 into circuit so that the receiver is rendered substantially mute. The switch 14 may be operated by means of a leaf spring associated with the condenser spindle, and the switch contacts may be arranged to remain closed for a short time after movement of the tuning condenser has stopped.
Patent GB-1510151-A (GB)
Title: Radio frequency coaxial cables
IPC: H01B7/22
Filed: 1975-05-20
Abstract: 1510151 Coaxial cables KAMAN SCIENCES CORP 20 May 1975 [16 Oct 1974] 21402/75 Heading H1A A radio frequency coaxial cable 10 having a substantially constant length over a wide range of temperatures comprises a central conductor 12 having a cone 18 preferably selected from the group comprising iron-nickel-cobalt alloys, molybdenum, and tungsten, an outer conductor 16 comprising a tubular member 22 selected from the same group as the core, a dielectric layer 14 comprising material selected from the group consisting of silica, magnesia and alumina, and at least one of the conductors being separated from the dielectric by a thin layer 20 or 24 of copper or silver.
Patent GB-281580-A (GB)
Title: Improvements in and relating to centrifugal governors
IPC: G05D13/08
Filed: 1927-08-15
Abstract: 281,580. Junkers, H. Aug. 15, 1927. Centrifugal governors.-In centrifugal governors in which the balls or weights 2 revolve between upper and lower discs 6, 5 which converge towards the periphery, the balls 2 being constrained to turn with the shaft, at least one of the discs 5 is mounted on a footstep bearing 7 so that it can turn freely. The balls are in a cage 3 keyed fo the shaft. One inside surface of the ball cage 3 is parallel to the dished slope of the disc 5. The lower disc 5 may be flat and the ball cage may comprise a horizontal spindle arm on which the balls slide so that the weight of the balls does not come into action.
Patent GB-282131-A (GB)
Title: Improvements in and relating to abrasion testing machines
IPC: G01N3/56
Filed: 1926-09-01
Abstract: 282,131. Dunlop Rubber Co., Ltd., and Lambourn, L. J. Sept. 1, 1926. Testing physical qualities of materials; testing indiarubber.- Relates to abrasion testing machines of the type wherein the sample-preferably of wheel-like form-is rotated in relation to an abrasion member, and consists in controlling the relative speeds of the sample and abrasive member so 'that the amount of slip is constant. The machine is particularly applicable to testing rubber for tyre triads. The test piece 1 is rotated by an electric motor 2 the speed of which is indicated by a tachometer 3 and controlled by a rheostat 4 in the armature circuit which is connected to the mains 5 via a starter 6 and switch 7. The test piece 1 which rotates by friction an abrasive disc 8 is arranged at the end of a bracket 9 pivoted on supports 11 and carrying an adjustable counterweight 12. The disc 8 is retarded by an electro-magnetic brake comprising a copper disc 13 rigid with the disc 8 and adapted to rotate between the poles of an electromagnet 14. The current energising the magnet 14 may be varied with the aid of a rheostat 16, a resistance in the form of a lamp 17 also being in the circuit of the magnet, while the speed of the disc 8 is indicated on a tachometer 15. Counters 18, 19 are provided for registering the revolutions of the disc 8 and of the test piece respectively, and thus allowing the slip to be obtained. A wire brush 20 arranged obliquely to the disc in an air pipe 21 may be used to keep the surface of the disc clean. The rotation of .the disc 8 may be used to generate electricity which may be used to actuate an electromagnetic brake and thus keep the speed of the disc constant automatically. An adjustable mechanical brake may be used with the disc 8 instead of the electric brake. The disc 8 may drive the specimen instead of the latter driving the disc.
Patent GB-905445-A (GB)
Title: Improvements in life-jackets
Inventor: JOHNS NORMAN ROBERT
IPC: B63C9/115
Filed: 1960-06-20
Abstract: 905,445. Life-jackets. EASTWOOD PLASTICS Ltd. March 28, 1961 [June 20, 1960], No. 21520/60. Class 141. [Also in Group XXI] In a life-jacket comprising front and back buoyancy units, the front unit is more buoyant on one side of the front than on the other and the total buoyancy of the front unit is greater than that of the back unit 10 which is disposed solely across the top of the back. The front unit comprises two compartments 8, 9, the larger compartment 8 being 2¢ to 3 times as buoyant as the compartment 9 and 2¢ times as buoyant as the back unit 10. The compartments 8-10 may be inflatable or filled with kapok &c. The jacket is fastened by lower straps 5, 6 and a central body strap 4 provided with a loop 7 for engagement by a hook in rescue operations.
Patent GB-1280786-A (GB)
Title: Apparatus for receiving negotiable paper articles
IPC: G07F19/00
Filed: 1971-04-19
Abstract: 1280786 Negotiable paper article receiver OMRON TATEISI ELECTRONICS CO 19 April 1971 [13 Feb 1970 (2)] 21534/71 Heading G4X A receiver for negotiable paper articles from a customer includes means for receiving, checking, temporarily storing and conveying the money to a permanent store or returning it to the customer. As shown in Fig. 2 such an article e.g. a bank note inserted in slot 12 activates belts 21, 22 which draw it through a checking device 23, the belts 21 having been activated by sensors (not shown) located between the belts 21, 22 and the slot 12. If the note is a forgery the belts 21, 22 reverse direction and the customer removes the note from the slot 12. If the note is genuine it passes to belts 25, 26 which are activated by the note in a similar manner to that for the belts 21, 22. Only belt 25 is driven directly; belt 26 rotates by frictional contact therewith. The note passes between the belts 25, 26 until it passes between a light source 28 and a photo-electric sensor 29 which energizes an electromagnet (31), Fig. 3 (not shown), which causes the roller 26 to pivot about a support (33) in a downward arcuate path. The note then falls towards conveyer belt 45 and an electromagnet (41) is energized, just after the belt 26 has fallen away, to cause a bar (45<SP>1</SP>) to strike the note and cause it to accelerate towards the belt 45 without crumpling or floating about. After a given period the electromagnets (31), (41) are de-energized. Several notes may be stored on the belt 45 until the last note has been inserted when the customer who has inserted them presses either button (18) or button (19) on the console, Fig. 1 (not shown), which causes the belt 45 to pass the notes to a store through slot 48 or return the notes to the customer through slot 15. In a modification shown in Fig. 4 the belt 26 is movable between the belts 25, 45. The receiver operates as before until the button (18) or (19) is pushed when cam 62 driven by motor 61 rotates anticlockwise causing the arm 63 to lower and push the carriage 65 carrying the belt 26 down towards the belt 45. After one quarter of a revolution of the cam 62, from the position shown, and for the subsequent half revolution the belts 26, 45 are in contact or have the notes between them and the belt 45 operates in the required direction to store or return the notes, as described. Completion of its revolution by the cam 62 raises the belt 26 back to the position shown. Comparison of Fig. 3, 5 (neither shown) illustrates how in the former device the notes rest wholly on the belt 45 whilst in the latter only one edge of the notes is nipped between the belts 26, 45 for the conveying part of the sequence of operations.
Patent GB-1424986-A (GB)
Title: Electromagnetic device
IPC: H01F29/14
Filed: 1974-05-15
Abstract: 1424986 Transformers R V DE RIVAS 15 May 1974 [11 Feb 1974] 21583/74 Heading HIT  An electromagnetic arrangement comprises a permanent magnet 10 the magnetic flux from which is made to alternate in direction in a magnetic core member 28 and so generate a current in windings 30, 32 connected to a loadcircuit. Flux switching means 20, 22, 24, 26, may comprise mechanically movable segments in the flux paths 16, 18 of high permeability material or for high frequency operation magnetic cores 36, 38, 40, 42 carrying coils 44, 46, 48, 50 arranged to magnetically saturate segments of the flux paths 16 and 18. By means of diodes (66, 68, 70, 72, Fig. 3, not shown) coils 44 and 50 may be supplied with positive half-cycles of current from a high frequency supply and coils 48, 46 with negative half-cycles.
Patent GB-1010315-A (GB)
Title: Improvements in or relating to a clutch structure
IPC: F16D13/50
Filed: 1964-05-25
Abstract: 1,010,315. Friction clutches. DANA CORPORATION. May 25, 1964 [June 10, 1963], No. 21592/64. Heading F2C. In a plate clutch engaged by a diaphragm spring 32 fulcrumed at 30 on a driving housing 16, a pressure plate 48 is drivingly connected to the housing by flexible straps 42 which are integral with the housing and connected to the pressure plate by bolts 50. The straps 42 also serve to withdraw the pressure plate when the clutch is disengaged. The bolts 50 are associated with bushings 52 which pass through apertured 54 in the diaphragm spring.
Patent GB-140696-A (GB)
Title: Improvements in cigar bunching
IPC: A24C1/10
Filed: 1919-09-03
Abstract: 140,696. Liberman, B. Sept. 3, 1919. Cigar-making machines.-In machines for forming fillers for cigars, of the type comprising an apron moved over a table, into a pocket at the end of which it dips, by a roller, guide-strips are fixed at the sides of the apron, and are so formed as to give the ends of the filler the desired shape and to serve as guides in trimming the binder; they may also close the ends of the pocket so as to prevent the material placed thereon from projecting. The strips 14, 15, Fig. 1, are attached to the table 'by bolts passing through slots 12, so that they can be adjusted to fit aprons of different widths. In the form shown, they are sloped so as to give the ends of the filters a tapered form, but they may be flat. The strips follow the form of the pocket 18; Fig. 5, shows a form provided with an end wall 19. The strips, whether flat or sloping, may be so dimensioned that the distance across their outer edges is equal to the proper breadth of the binder, allowing the right amount of overlapping, and the outer edge of a sloping slip may be formed as a cutting-edge to cut off the binder to this breadth.
Patent GB-1031178-A (GB)
Title: Purification of triethylenediamine
IPC: C07D487/08
Filed: 1963-05-30
Abstract: Crude triethylenediamine contaminated with piperazine and/or piperazine derivatives containing active H is purified by a process comprising contacting, preferably in an inert organic solvent, especially in an aromatic hydrocarbon's benzene, or a ketone, crude triethylene diamine with acrylonitrile in an amount at least chemically equivalent to the total active hydrogen content of the mixture under known conditions to effect cyanoethylation, preferably above 50 DEG  C., and cooling the solution, preferably below 50 DEG C. to precipitate triethylene diamine.  The crude product employed as feed stock may be obtained by contacting N-aminoethyl piperazine at elevated temperatures with a known cyclization catalyst and separation of the light ends by fractional distillation.  The invention is described with reference to a plant flow sheet (not shown) showing also the piperazine conversion and including recycle streams.
Patent GB-621282-A (GB)
Title: Electrodes for glass smelting furnaces
IPC: C03B5/027
Filed: 1946-05-14
Abstract: 621,282. Furnace electrodes. AKTIESELSKABET MOSS GLASVAERK. May 14, 1946, No. 21703/48. Convention date, Jan. 28, 1941. Divided out of 620,763. [Class 39(iii)] An electrode for glass smelting furnaces and the like comprises a plate 11 eccentrically mounted on a rotatable shaft 10. The shaft 10 may be journalled in or on the walls of a furnace, rotation of the shaft 10 varying the height of the plate 11 with respect to the molten mass. The plate 11 may be rectangular, triangular or of any other suitable shape. Specification 620,763 is referred to.
Patent GB-1012810-A (GB)
Title: A method of absorbing chlorine from gas mixtures
IPC: B01D53/68
Filed: 1964-05-26
Abstract: Chlorine is absorbed from a gas mixture by contacting the mixture with solvent in at least two successive absorption steps, wherein the gas discharged from the penultimate absorption step is contacted with only a portion of the total amount of solvent, said solvent portion being cooled to a temperature lower than the temperature prevailing in the penultimate absorption step. In a specific embodiment, the Figure, chlorine containing H2, CO2 and air as impurities, is fed through pipe 1 to cooled film absorber 2 where it is contacted with CCl4 at -10 DEG  C. fed in from pipe 3. Unabsorbed gas leaves absorber 2 by pipe 5 and enters cooled film absorber 6 where it is contacted with CCl4 at -10 DEG  C. entering by pipe 7.  Unabsorbed gas leaves absorber 6 by pipe 9 to which is added a portion <PICT:1012810/C1/1> of the absorbent solvent (CCl4) by pipe 12.  The mixture enters absorber 10-11 below the surface of the solvent, the level of which is maintained by the solvent discharge pipe 13, whilst unabsorbed gas is finally discharged through pipe 14. Solvent discharged through pipe 13 passes through heat exchanger 15 and enters pipe 3, whilst solvent is discharged from absorber 6 to pipe 3 via 8.  CCl4 laden with Cl2 passes along pipe 4, pump 16, heat exchanger 18 and on to desorption or distillation unit 20. Section 21 of the desorber is heated by steam at 170 DEG  C. whilst the desorber is operated at 8 atm.  A reflux condenser 24 is cooled by a portion of the solvent withdrawn from pipe 17 by line 28 and returned to pipe 19 by line 29 whilst recovered solvent is fed by pipe 25 to the upper part of 23 of the desorber to heat inflowing solvent.  Recovered solvent flows by pipe 26 to heat exchanger 18 where it is further cooled before passing into pipe 3. Higher boiling impurities, e.g. chlorinated hydrocarbons, may be removed periodically by withdrawing a portion of the solvent from 20, distilling it and returning it to the solvent circuit.  Gaseous chlorine leaving desorber 20 by pipe 30 is liquified in 31 by cooling with water. A portion of the liquified chlorine is fed to desorber 10-11 by way of pipe 33 and heat exchanger 15.  The liquid chlorine fed to absorber 10-11 is caused to evaporate by means of the ejector 35 situated in pipe 3, and thus cool down the absorber to -70 DEG  C.  A separte coolant circuit 41 to 44 is used to cool absorbers 2 and 6.  Valve 47 may control the flow of solvent according to the chlorine content of the inflowing gas, so that the lower explosion limit is not reached in absorber 2.
Patent GB-381272-A (GB)
Title: Improvements in alarm devices
IPC: H04M11/04
Filed: 1931-07-30
Abstract: 381,272. Automatic exchange systems. DAVIDSON, F. R., 829, London Road, Westcliff-on-Sea. July 30, 1931, No. 21796. [Class 40 (iv).] The operation of a fire or burglar contact energizes a magnet k17 to withdraw a detent from a weighted lever k12 which falls raising a platform k for lifting the telephone receiver, moving a rack m1 coupled through a pinion and rubber stud to the number dial, and releasing the brake or starting electrically the motor of a gramophone contained in a soundproof box with the telephone set. Repeater mechanism may be provided on the gramophone.
Patent GB-814439-A (GB)
Title: An improvement in and relating to archery arrows
IPC: F42B6/06
Filed: 1957-07-10
Abstract: 814,439. Arrows. HIPPERSON, A. J. July 10, 1957, No. 21798/57. Class 132(3) An archery arrow has sheet synthetic plastic and feather fletchings. As shown, a fletching 16, which in flight may strike against an arrow rest 20 of a bow, is of feather as is a fletching 18 diametrically opposite and fletchings 17 and 19 are of synthetic plastic e.g. cellulose acetate or celluloid. The fletchings are attached by glueing their baises to the arrow shaft using a fletching jig and they may be secured at an angle with the longitudinal axis of the arrow so as to impart spin to the arrow in flight.
Patent GB-1057899-A (GB)
Title: A device for testing plastics pipes for cracking
Inventor: BOKSHITSKY MARY NAUMOVICH
IPC: G01N27/20
Filed: 1964-05-27
Abstract: 1,057,899. Testing thermoplastic pipes. NAUCHNO-ISSLEDOVATELSKY INSTITUTE SANITARNOI TEKHNIKI. May 27, 1964, No. 21880/64. Heading G1S. A device for testing thermoplastic pipes 14 for cracking comprises a cell 2 containing an electrolyte, means for supporting mandrels 12 in the electrolyte, means adapted to move the thermoplastic pipes 14 and mandrels 12 relative to one another and an automatic recording system 9, 10 adapted to register the closing of electric circuits between the electrolyte and contacts positioned within the pipes, upon cracking. During testing the cell 2 is lifted through gear means 3, 15 to its upper position against plate 5, as shown in Fig. 1, and pens 10 are actuated to scribe marks on a tape mounted on the drum 9. On cracking of a pipe 14, the circuit between the electrolyte and the core 11 is closed through contacts 13 to actuate a relay to arrest the recording apparatus. The open end of the pipe may be provided with a closure cap and the contacts 13 omitted.
Patent GB-262497-A (GB)
Title: Improvements in or relating to fuel pumps for multi-cylinder internal combustion engines
IPC: F02D17/00
Filed: 1925-09-02
Abstract: 262,497. Rushen, P. C., (Maschinenfabrik Augsburg-Nurnberg, Akt.-Ges.). Sept. 2, 1925. Regulating delivery by opening suction and delivery valves; regulating delivery by by-passes or return circuits; regulating delivery of two or more combined pumps. - In fuel pump installations for multicylinder internal combustion engines wherein the suction, overflow, or other suitable valves can be actuated so that corresponding engine cylinders may be put out of operation, the control device comprises tappets above the valves adapted to be successively actuated by cams on a cam shaft which can be set so as to cut out some or all of the cylinders. Above each adjustable suction valve b is mounted a tappet c and above them is an angularly adjustable cam shaft e with a cam f for each tappet, the cams having peaks 'of different circumferential lengths and the centres of the peaks being angularly and relatively situated around the shaft. Instead of angular settings of the camshaft, adjustment may be effected by sliding the shaft .which is then provided with wedge-shaped cams.